1972年,上海郊区夏熟油菜用“九二○”沾根的面积,约占全市油菜总面积的十分之一左右,增产效果比较明显,根据20余块试验田的考查和七块实产田块的产量分析,用20单位“九二○”沾根的早熟油菜,平均每亩增收菜籽28.1斤,增产9.8%;沾根的晚熟油菜平均每亩增收菜籽35.27斤,增产13.4%。沾根油菜的生长特点一、促进油菜根、叶的生长油菜移栽后,由于根系受到损伤,必然要有一段返青过程,出现生长停滞,叶子萎垂,叶子变红等现象,通常称之为“落难”。以至不能充分利用冬前尚不太冷的气温条件,促进 In 1972, the area of ​​summer ripe rape in Shanghai suburbs occupied about one tenth of the total area of ​​rapeseed in Shanghai, and the yield increase effect was more obvious. According to the examination of more than 20 experimental plots and seven solid The yield of field plots, with 20 units “nine ” stained roots of precocious rape, the average yield per acre collected raisins 28.1 kg, an increase of 9.8%; rooted late rapeseed rapeseed yield average 35.27 kg, An increase of 13.4%. First, to promote the growth of rape roots and leaves rape transplanting, due to the root damage, there must be a return to green process, there growth stagnation, leaf weeping, red leaves and other phenomena, usually called “Stray ”. Even can not make full use of the winter is not too cold temperature conditions, promotion